Now that I’ve been at this for a while, and have had some pretty impressive results, it’s time to get serious. I’ve done Northern Lights that tested over 29% total THC. And my last grow was Critical that tested at just over 24%. I am fortunate to have a lab relatively close that doesn’t break the bank.
Now I’m going to try to really get this down. For background, I’m in a 4’x 4’ x 80” tent using 600w MH/HPS with 2, 300w Roledro COB LEDs to augment the HPS during flower. I have a brand new Sun Systems sealed/ventilated hood that I am running my iPower 4” 190 cfm fan through and dumping the exhaust out a window and I still have trouble with heat. I struggle to keep the temperature between 80 to 85. I know that is high but I have to draw the line somewhere since electricity is my major expense. I’m growing in a DWC set up using RO and I do one plant at a time so that one plant gets all of my attention. I use GH Flora Trio nutrients with CaliMagic and HydroGuard. During past grows I’ve pretty much followed the feed chart found here on GWE and closey monitored PH with total disregard for ppm and always topped off with plain water. With nutrients at this relatively low level I experienced tip browning that was attributed here to nutrient burn which I am finding difficult to believe since my ppm’s we’re well under 500.
Recently I purchased a Blue Labs combometer so now I have access to a quality ppm meter. My current grow is a little Jack Herer girl that is entering week 12. So the stretch is over. All of this being said, during my last nutrient change, with everything in and ph set at 6.0, my ppm was 470 which is pretty low from what I’ve been able to gather these last couple of weeks. Today, during this week’s change I kicked it up to 640 ppm and intend to continue to bump it up throughout the remainder of this grow.
I’m always interested in hearing others experience. In this case, as it relates to utilizing ppm to monitor nutrient levels and uptake.
Be well fellow growers.
Now I’m going to try to really get this down. For background, I’m in a 4’x 4’ x 80” tent using 600w MH/HPS with 2, 300w Roledro COB LEDs to augment the HPS during flower. I have a brand new Sun Systems sealed/ventilated hood that I am running my iPower 4” 190 cfm fan through and dumping the exhaust out a window and I still have trouble with heat. I struggle to keep the temperature between 80 to 85. I know that is high but I have to draw the line somewhere since electricity is my major expense. I’m growing in a DWC set up using RO and I do one plant at a time so that one plant gets all of my attention. I use GH Flora Trio nutrients with CaliMagic and HydroGuard. During past grows I’ve pretty much followed the feed chart found here on GWE and closey monitored PH with total disregard for ppm and always topped off with plain water. With nutrients at this relatively low level I experienced tip browning that was attributed here to nutrient burn which I am finding difficult to believe since my ppm’s we’re well under 500.
Recently I purchased a Blue Labs combometer so now I have access to a quality ppm meter. My current grow is a little Jack Herer girl that is entering week 12. So the stretch is over. All of this being said, during my last nutrient change, with everything in and ph set at 6.0, my ppm was 470 which is pretty low from what I’ve been able to gather these last couple of weeks. Today, during this week’s change I kicked it up to 640 ppm and intend to continue to bump it up throughout the remainder of this grow.
I’m always interested in hearing others experience. In this case, as it relates to utilizing ppm to monitor nutrient levels and uptake.
Be well fellow growers.
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